We use as sources the preprocessed high-resolution galaxies that were employed to generate the simulations of Time Delay Lens Modelling Challenge [1]}, [2]}. These sources consist of high-resolution cropped images of nearby spiral galaxies from the Hubble Legacy Archivehttps://hla.stsci.edu/hlaview.html, on which isolated stars and objects in the field have been removed and the background has been subtracted. Doing so ensures that a negligible amount of noise is propagated to the image plane, the presence of which can potentially lead to biases in the source reconstruction and recovered lens model parameters. We create two types of source: either a single galaxy or two close-by galaxies simulating a merging pair, that we place at redshift \(z_{\rm s}=1.2\) . Source galaxy images are shown in the right column of Fig. REF .
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